Build Thread- Easy cnc

[purecnc]

Hi im 14 years old and I started to build my first cnc machine based off Tom McWires insructable http://www.instructables.com/id/Easy...lling-Machine/
but im making it bigger to have a cutting table of 11x11in.
And I have a question to ask.
1. here are the motors im using http://www.mpja.com/prodinfo.asp?number=17757+MS what voltage and amps should i use for my power supply

[leggazoid]

Power supply specs are dependent on the stepper driver you will use. Is it chopper or PWM type? Is it the light bulb design from mcwire?

http://www.mpja.com/prodinfo.asp?number=18091+PS may work but need more detail about your electronics.

To start out on the cheap a modified computer power supply will work.

[purecnc]

Originally Posted by leggazoid Power supply specs are dependent on the stepper driver you will use. Is it chopper or PWM type? Is it the light bulb design from mcwire? http://www.mpja.com/prodinfo.asp?number=18091+PS may work but need more detail about your electronics. To start out on the cheap a modified computer power supply will work.

Im going to use this instructable http://www.instructables.com/id/Easy..._a_Recycled_M/
with turbo cnc and if that doesn't work i will have to chose to build Tom McWires controller or buy the EZ stepper from Hobbycnc

[purecnc]

was working in a freezing cold (32f) shop today and i got some pics.

[purecnc]

worked today in shop and heres some pictures.
and heres a youtube video

YouTube- CNC VID1

YouTube- CNC VID1

(Sorry for the bad quality it was taken from my phone)

[FandZ]

Your so young to have such and evil addiction. Quick, get out. Save yourself while you still can. lol Welcome aboard. Looks like you are making quick progress. Let me ask you, what holds the wood down on the rails? From the pictures it looks like the wood just travels on the U shape extrusions. Is that how it works?

[purecnc]

Originally Posted by FandZ Your so young to have such and evil addiction. Quick, get out. Save yourself while you still can. lol Welcome aboard. Looks like you are making quick progress. Let me ask you, what holds the wood down on the rails? From the pictures it looks like the wood just travels on the U shape extrusions. Is that how it works?

I use simple aluminum "C" channel and the wood is held down by 1\4in bolts also the X and Y axis are not held down by anything like the Z axis is held by skate board bearings.

[murray]

Originally Posted by purecnc Im going to use this instructable http://www.instructables.com/id/Easy..._a_Recycled_M/ with turbo cnc and if that doesn't work i will have to chose to build Tom McWires controller or buy the EZ stepper from Hobbycnc

Make sure that your motors are under 500ma each. My motors are 1.2A each, so I have to make a new design.

The machine is looking great, keep up the good work.

[purecnc]

Originally Posted by murray Make sure that your motors are under 500ma each. My motors are 1.2A each, so I have to make a new design. The machine is looking great, keep up the good work.

Heres what the spec for my mototrs are murray.
MFG: SHINANO KENSHI
P/N: STP42D241
COIL: 12V/3.1 ohm/2.9mH
TYPE: 2 Phase Uni-Polar 6 lead
STEP ANGLE: 1.8 deg 200step/rev
5mm dia. X 24mm steel shaft with metal 20 tooth X 11/16" dia. gear & 22 tooth X 9/16" dia. cog belt pully. 4 corner m3x0.5 mounting holes. 5" leads.
L: 1-5/8" (Body) SQ: 1-9/16” WT: .64

[purecnc]

worked in the shop yesterday and today and got the X Y Z axis's all on but i have to do some tweeking.
heres some more pictures.
and heres a youtube video of it cutting.(im manually moving the steppers)

YouTube- CNC vid 2

YouTube- CNC vid 2

[purecnc]

I have been having problems with my stepper drive so it will be awhile before i get this running.